Papers by Deborah Page-dumroese
Frontiers in Forests and Global Change, 2020
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Concern over changes in soil productivity due to forest management is often debated by forest man... more Concern over changes in soil productivity due to forest management is often debated by forest managers and the public. One key element in the discussion is use of mechanized equipment (such as rubber-tired skidders, log forwarders, or tracked vehicles) to remove timber products from the forest. Part of the debate focuses on soil compaction, removal of nutrients when tree crowns are removed rather than left on the soil surface after harvest, length of time for soils to recover, and methods for monitoring. We have found that ultimately soil properties (texture, organic matter, and water content) determine the impact of harvesting or site preparation.
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Energies, 2021
Mercury mining and its use in gold mine operations left a legacy of contamination in northern Cal... more Mercury mining and its use in gold mine operations left a legacy of contamination in northern California. Contaminated sediments and water continue to affect local and downstream ecosystems. To assess the efficacy of biochar-amended soils on decreasing Hg transport, biochar was used to amend rock and sediment columns and mesocosms to decrease suspended sediment and associated mercury (Hg) in storm water runoff from Sierra Nevada hydraulic mines. Mercury-contaminated storm water runoff and hydraulic mine debris were collected from two hydraulic mine sites in the Yuba River, California watershed. Mercury concentrations and turbidity were analyzed from storm water samples and hydraulic mine debris in three simulated storm runoff experiments using decomposed granite columns, sediment columns, and sediment mesocosms amended at 0%, 2%, or 5% biochar by weight. Columns containing hydraulic mine debris and mixed with 5% biochar had a significant (p < 0.05) reduction in filter-passed merc...
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Biochar, 2021
There are thousands of abandoned mine land (AML) sites in the U.S. that need to be restored to re... more There are thousands of abandoned mine land (AML) sites in the U.S. that need to be restored to reduce wind and water erosion, provide wildlife forage, shade streams, and improve productivity. Biochar created from woody biomass that would normally be burned in slash piles can be applied to soil to improve soil properties and is one method to restore AML soil productive capacity. Using this ‘waste’ biomass for biochar and reclamation activities will reduce wildfire risk, air pollution from burning, and particulates released from burning wood. Biochar has the potential to improve water quality, bind heavy metals, or decrease toxic chemical concentrations, while improving soil health to establish sustainable plant cover, thereby preventing soil erosion, leaching, or other unintended, negative environmental consequences. Using forest residues to create biochar also helps reduce woody biomass and improves forest health and resilience. We address concerns surrounding organic and inorganic ...
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Forests, 2020
Research Highlights: This experiment compares a range of combinations of harvest, prescribed fire... more Research Highlights: This experiment compares a range of combinations of harvest, prescribed fire, and wildfire. Leveraging a 30-year-old forest management-driven experiment, we explored the recovery of woody species composition, regeneration of the charismatic forest tree species Larix occidentalis Nutt., and vegetation and soil carbon (C) and nitrogen (N) pools. Background and Objectives: Initiated in 1967, this experiment intended to explore combinations of habitat type phases and prescribed fire severity toward supporting regeneration of L. occidentalis. At onset of the experiment, a wildfire affected a portion of the 60 research plots, allowing for additional study. Our objective was to better understand silvicultural practices to support L. occidentalis regeneration and to better understand the subsequent impacts of silvicultural practices on C and N pools within the vegetation and soil. Materials and Methods: We categorized disturbance severity based on loss of forest floor d...
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Journal of Soil and Water Conservation, 2021
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Forest Ecology and Management, 2020
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We investigate types of turbulence generated during particle acceleration in 3D Harris-type recon... more We investigate types of turbulence generated during particle acceleration in 3D Harris-type reconnecting current sheets (RCSs) with magnetic islands, using the particle-in-cell approach. When a gui...
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Geoderma, 2020
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Forests, 2018
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Forests, 2018
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Soil Science Society of America Journal, 2019
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Forest Ecology and Management, 2019
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Soil Science Society of America Journal, 2019
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Ecosphere, 2016
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International Journal of Wildland Fire, 2019
Wildfires can drastically alter belowground processes such as organic matter (OM) decomposition. ... more Wildfires can drastically alter belowground processes such as organic matter (OM) decomposition. We used wood stakes of two different tree species, trembling aspen (Populus tremuloides Michx.) and loblolly pine (Pinus taeda L.), placed at three soil locations (soil surface, forest floor–mineral soil interface, mineral soil), as an index of the long-term (5-year) effects of wildfire on OM decomposition in two forest stands after high-severity wildfire and in an unburned control. Wood stake mass loss was generally higher for aspen, especially in the mineral soil of burned plots, than in control plots after 5 years. Soil surface and interface (unburned stands only) stakes showed few significant differences for either species on the Bitterroot National Forest. On the Gallatin National Forest, both pine and aspen stakes had significantly greater mass loss at the interface (unburned stand) at the end of 5 years, and also decayed significantly faster at the 10–20-cm depth in the wildfire a...
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Journal of Plant Research, 2018
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Papers by Deborah Page-dumroese